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A241702 Number of connected graphs on n nodes with chromatic number 7. 2
0, 0, 0, 0, 0, 0, 1, 6, 110, 4125, 389583 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,8
COMMENTS
A diagonal of triangle in A126736.
LINKS
Travis Hoppe and Anna Petrone, Encyclopedia of Finite Graphs
T. Hoppe and A. Petrone, Integer sequence discovery from small graphs, arXiv preprint arXiv:1408.3644 [math.CO], 2014.
F. Hüffner, tinygraph, software for generating integer sequences based on graph properties.
Eric Weisstein's World of Mathematics, Chromatic Number
CROSSREFS
Sequence in context: A156554 A197325 A197978 * A302866 A243511 A199222
KEYWORD
nonn,hard,more
AUTHOR
Travis Hoppe and Anna Petrone, Apr 27 2014
EXTENSIONS
a(11) added using tinygraph by Falk Hüffner, Apr 04 2017
STATUS
approved

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Last modified February 22 12:20 EST 2024. Contains 370255 sequences. (Running on oeis4.)